Boiler-cleaner.



N0. $58 ,304. I PATENTED' JUNE 25, 190v.

' L. M. PETTI'I'.

BOILER CLEANER.

APPLICATION FILED MAR. 19, 1907.

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PATENTED JUNE 25, ,1907.

m. 58,304. Y L. M. PBTTIT.

BOILER GLEANBR.

APPLICATION FILED MAR. 19. 1907.

2 SHEETS-SHEET 2.

l 6 the tubes thereof.

LAFAYETTE M. PETTIT, OF ORIPPLE GREEK, COLORADO.

BOILER-CLEANER.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed March 19,1907. Serial No. 363,274.

To all whom it may concern:

Be it known that I, LAFAYETTE M. PETTIT, a citizen of the United States, residing at Cripple Creek, in the county of'Teller and State of Colorado, have invented certain new and useful Improvements in Boiler-Cleaners; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in boiler cleaners, my object being 'to thoroughlyclean the boiler of dirt and sediment which naturally accumulates therein due to the impurities contained in the water.

My improved cleaner includes the formation of a number of channels in the lower part of the boiler, and a longitudinally disposed late adjustable from the outside of the lioiler, whereby any channel may be closed at the top. Each channel is also provided at one extremity with an outlet, its opposite extremity being open to allow the boiler pressure to act to create a circulation through the channel for the urpose of removing the dirt therefrom. n this way the dirt may be removed from the boiler by cleaning one channel at a time which is a decided advantage over attempting to clean the entire boiler at a single operation in the ordinary way.

Having briefly outlined my im roved construction, I will proceed to descri e the same in detail reference being made to the accompanying drawing in which is illustrated an embodiment thereof.

In this drawing, Figure 1 is a longitudinal section taken through a boiler equipped with my improvements. Fig. 2 is a cross section of the same. Fig. 3 is an end elevation of the front end of the boiler.

The same reference characters indicate the same parts in all the'views.

Let the numeral 5 designate the boiler and Journaled in the opposite heads of the boiler is an operating shaft 7 having a gear 8 at each extremity meshing with a curved rack bar 9. Each rack bar has a groove which receives a guide 10 curved to harmonize with the curve of the rack bar, the latter being curved to corretwo rack bars are connected by a longitudinally disposed plate 12. In the lower part of the boiler is placed a number of longitudinally disposed angle bars 13 forming channels 14 each of which is adapted to be closed at the top by the plate 12. These angle bars 13 terminate before reaching the rearextremity of the boiler, hence the boiler pressure is in direct communication with each channel. At the opposite or forward extremity of the boiler, the angle bars are full length or engage the forward head on the inside. The forward extremity of each of these channels is provided with an outlet conduit 15 each having a valve 16, all of the said conduits being connected with a common waste pipe 17.

The shaft 7 is journaled in a bearing 4 at the rear extremity of the boiler and passes through a stuifing box 3 at the forward extremity thereof. This shaft is provided with a forward extension 2 which passes through the tube door 5A of the boiler, its outer extremity being equipped with a hand crank 1. The tube door of the boiler is provided with hinged doors A and B.

From the foregoing description the use and operation of my improved boiler cleaner will be readily understood. The crown sheet of the boiler is provided exteriorly with a graduated plate 18 with which is connected a segmental gear 19 carrying a pointer 20. This gear is adapted to be actuated by teeth C formed on the hub of the hand crank. By virtue of this arrangement, the position of the cover plate 12 within the boiler may be known to the person in charge thereof. For

instance the indicating mechanism may be.

so arranged that when the pointer stands at any numeral from 1 to 6, it will be known that the cover plate 12 is closing a corresponding channel, the number of channels corresponding with the numerals on the graduated plate. The adjusting mechanism is also so arranged that a movement of the lever 1, suflicient to cause the pointer to travel from one numeral to the other on the plate 18, will be suflicient to cause the cover plate 12 to travel from the position closing one channel, to a position closing an adjacent channel. Assuming that it is desired to clean any one of the channels 14, the crank 1 will be manipulated to turn the pinions or gears 8 which meshing with the rack bars 9, will move the plate 12 to close the desired channel at the top. It will then only be necessary to open the valve 16 of the conduit forming an outlet for the corresponding channel. The pressure of the boiler will then cause the water to rush from the rear end of the boiler through the said channel and out into the waste pipe 12. In this way the boiler may be cleaned one channel at the time and at any desired intervals, without materially reducing the boiler pressure.

Having thus described my invention, what I claim is:

1. In a boiler cleaner, the combination with a boiler provided with a number of with a number of sediment channels formed in its lower portion, curved rack bars slidably mounted in the opposite extremities of the boiler, a longitudinally disposed plate connecting said bars and adapted to close any channel, a shaft journaled in the boiler and having gears engaging the rack bars for adjusting the said plate, and a crank connected with the said shaft for operating the latter from the outside of the boiler, each channel when its top is closed by the plate being in communication with the boiler at one extremity while its opposite extremity is provided with a valve-controlled outlet for the purpose set forth.

3. In a boiler cleaner, the combination with a boiler provided with a plurality of longitudinally disposed channels formed in its lower portion, the shell of the boiler lorm ing the bottoms of the channels, a plate for closing said channels at the top, the plate being of a width to close the channel separately, and means operated from the outside of the boiler for shifting said plate from one channel to another, the channel when the plate is in place being in communication with the boiler at one extremity and having a valve-controlled outlet at the opposite extremity.

4. In a boiler cleaner, the combination with a boiler provided with a number of 1011 gitudinally disposed partitions attached to the lower portion of the shell, the said partitions being separated to form a series of 1011- gitudinally disposed channels, a cover plate for closing the channels at the top, the width ofthe plate being such as to close a single channel at a time, each channel when the plate is in place being open at one extremity whereby it is in communication with the boiler and having an outlet at the opposite extremity, means operated from the outside of the boiler for shifting the said plate from one channel to another, and exteriorly located indicating means actuated by the opcrating mechanism, for indicating the position of the cover plate within the boiler at all times, substantially as described.

In testimony whereof I a'llix my signature in presence of two witnesses.

LAFAYETTE M. PETITTIT.

Witnesses:

' FRANKW.BAXTER,

OnAnLEs ERIOKSON. 

